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Which one is having lesser resistance . if a 220V 60W bulb or 220V 40W bulb?
Wiki User
∙ 11y ago
A 60 watt incandescent bulb using 120 Volts draws about one-half amp.
Watts = Volts x Amps (For a resistive load).
By Ohm's Law Volts = Current x Resistance so R = 120 V / .5 A = 240 Ohms.
Doing the same math for a 40 watt bulb you get 360 Ohms.
Wiki User
∙ 13y ago
Wiki User
∙ 14y agoPower (w) = Volts (v) * Current (I)
I = P/V
100w bulb = 100/230 = 434mA
40w bulb = 40/230 = 174mA
Wiki User
∙ 13y agoWiki User
∙ 12y agoRecall power P = V2/R
For a constant V, P is inversely related to the resistance of the filament.
Hence 40 W bulb would have more resistance than that of 200 W bulb.
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How much current will an electric bulb draw a 220v source if the bulb filament is 1200ohm?
The equation that you are looking for is I = E/R. Amps = Voltage/Resistance in ohms.
Can you use 110v chandler in 220v country by changing a 220v light bulb The chandler said max 100w light bulb so do you need to use a smaller watts of a 220v light bulb?
The light bulb should still have the same limit - 100 watts, because the limit is set practically by how much heat they produce. You need to make sure the wiring in the chandelier is correctly insulated for the higher voltage.
An electric bulb is rated 220v and 100wWhen it is operated on 110v the power consumed will be what?
25w
Can you use 120V lamps in Europe by just putting in a 240V bulb and a European adapter on the plug?
If all the components are rated to 220V, yes. Keep in mind that if the appliance was designed for 110V it may arc if 220 is run through it. If you don't know the device can handle 220V, don't run it at 220V. Chances are it was manufactured cleaply and cannot handle the extra voltage.
Why does the resistance of a filament bulb depend on the current in the bulb?
The resistance of a piece of wire changes with temperature. In a filament bulb the wire is heated to about 3000 degrees C so a large change in resistance can be expected. A 240 v 105 w halogen bulb has a cold resistance of 35 ohms, but when running its resistance is 549 ohms.
How much current will an electric bulb draw a 220v source if the bulb filament is 1200ohm?
The equation that you are looking for is I = E/R. Amps = Voltage/Resistance in ohms.
Does current change in a circuit having bulb in series with a resistance?
Absolutely the more Resistance is put in series the less current Will flow.
Two lamps A and B are rated 60W 220V and 100W 220V respectively so why does the answer say that when connected in parallal bulb A is brighter?
In parallel, they both obviously have 220 v across them, so the 100 W bulb is obviously brighter than the 60 W one. The 60 W bulb has more resistance, and in series they both have to pass the same current, so the 60 W has more voltage across it and might be brighter.
Which has the thickest filament - a high-resistance or a low-resistance bulb?
A low resistance bulb has a thicker filament.
Can you use 110v chandler in 220v country by changing a 220v light bulb The chandler said max 100w light bulb so do you need to use a smaller watts of a 220v light bulb?
The light bulb should still have the same limit - 100 watts, because the limit is set practically by how much heat they produce. You need to make sure the wiring in the chandelier is correctly insulated for the higher voltage.
What s the correct calulation for the bulb power on watts which has has a current of 0.5 and the voltage is 220v?
Power is current times voltage, so a current of 0.5 amperes and a voltage of 220v across a bulb will yield a power of 110 watts.
What is cold resistance?
That is e.g. the resistance of a cold bulb before the bulb is lighted and heats up.
What gives the biggest resistance 3 volt bulb or 6 volt bulb?
3 volt bulb gives the biggest resistance
An electric bulb is rated 220v and 100wWhen it is operated on 110v the power consumed will be what?
25w
Why bulb is resistive load?
the filament is made of tunguston which is having high resistance value,Hence it's resistive load
What does a light bulb have?
The resistance of a light bulb varies, depending on the type of bulb, the power rating, and the temperature. A typical incandescent 60 watt bulb, for instance has a cold resistance of about 30 ohms, and a hot resistance of about 240 ohms.
What is the general resistance of a tungsten filament?
The resistance of the filament in a light bulb is(voltage at which the bulb is designed to operate)2/(the rated power/watts of the bulb)
